– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Fri 28 Aug Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Fri 28 Aug Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Fri 28 Aug Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 10mm), mostly falling on Fri night. Very mild (max 18°C on Fri afternoon, min 11°C on Fri night). Wind will be generally light. | Days 5–7 Weather SummaryHeavy rain (total 32mm), heaviest during Wed morning. Warm (max 21°C on Mon afternoon, min 11°C on Wed night). Wind will be generally light. | ||||||||||||||||
Fri 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  |  |  |  |  | | | | |  | | | |
rain shwrs | mod. rain | rain shwrs | rain shwrs | rain shwrs | cloudy | light rain | some clouds | clear | some clouds | some clouds | clear | cloudy | rain shwrs | heavy rain | heavy rain | rain shwrs | |
Cloud base (m) | 2050 | 550 | 600 | 900 | 2100 | 1550 | 1600 | 1550 | 8800 | 5300 | 5350 | 2200 | 2000 | 600 | 550 | 650 | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.2 | 6 | 2 | 1.6 | 0.1 | — | 0.2 | — | — | — | — | — | — | 0.3 | 15 | 11 | 5 |
max °C | 18 | 13 | 11 | 14 | 12 | 11 | 13 | 12 | 18 | 21 | 17 | 18 | 20 | 16 | 12 | 12 | 12 |
min °C | 17 | 11 | 11 | 12 | 11 | 11 | 12 | 11 | 13 | 21 | 15 | 15 | 20 | 13 | 12 | 12 | 11 |
chill °C | 17 | 11 | 11 | 12 | 11 | 11 | 12 | 11 | 13 | 21 | 15 | 15 | 20 | 12 | 10 | 11 | 11 |
Freezing level m | 2850 | 2500 | 2200 | 2450 | 2550 | 2950 | 3100 | 3450 | 3550 | 3650 | 3700 | 3450 | 3300 | 2700 | 2550 | 2500 | 2350 |
 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — |
 | 7:58 | — | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:50 | — | — | 7:47 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 10mm), mostly falling on Fri night. Very mild (max 18°C on Fri afternoon, min 11°C on Fri night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 32mm), heaviest during Wed morning. Warm (max 21°C on Mon afternoon, min 11°C on Wed night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.